Solar photovoltaic (PV) demand for 2012 reached just 29.0 GW, an increase of only 5 percent year-over-year compared to 27.7 GW in 2011, according to findings within the upcoming NPD Solarbuzz Marketbuzz report. This is the first time in a decade that year-over-year market growth in the PV industry has been less than 10 percent.